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采用中置O3-BAC工艺进行中试实验,通过对微生物、微型生物、消毒副产物和AOC进行检测分析,研究了不同的消毒方式对砂滤池出水消毒效果的影响。结果表明,氯消毒对微型生物、微生物的去除效果稍弱于臭氧联合氯消毒;对于消毒副产物而言,氯消毒产生的卤代烃、氯酸盐的含量高于臭氧联合氯消毒,产生的溴酸盐两者处于同一水平,而产生的甲醛则是氯消毒低于臭氧联合氯消毒;氯消毒最终砂滤池出水AOC平均含量75.93μg乙酸碳/L,臭氧联合氯消毒为101.23μg乙酸碳/L,大于100μg乙酸碳/L,不利于供水管网的生物稳定性。
The mid-level O3-BAC process was used in the pilot test. The effects of different disinfection methods on the effluent disinfection of sand filter were studied through the detection and analysis of microorganisms, micro-organisms, disinfection by-products and AOC. The results showed that the effect of chlorine disinfection on microbes and microorganisms was weaker than that of ozone combined with chlorine disinfection. For disinfection by-products, the content of halogenated hydrocarbons and chlorates produced by chlorine disinfection was higher than that of ozone combined with chlorine disinfection Bromate was at the same level, while the formaldehyde produced was less than chlorine disinfection combined ozone disinfection of chlorine; chlorine disinfection final sand filter effluent AOC average content of 75.93μg acetic acid carbon / L, ozone combined chlorine disinfection of 101.23μg acetic acid carbon / L, greater than 100μg carbon / L, is not conducive to the biological stability of the water supply network.